Introducing the ASCAR QoS framework for Lustre.

This is the ASCAR client for Lustre. ASCAR, the Automated Contention Management for High-Performance Storage Systems, is designed by the Storage Systems Research Center (SSRC) in University of California, Santa Cruz.

This client is based on Lustre 2.9.0 and follows the Lustre's license, which is GPL version 2. For more information about ASCAR, please read the project page at: TODO

Introduction

ASCAR is different than server-side schedulers like NRS because ASCAR limits rate from the client.

The following installation instruction is based on the official guide: Walk-thru- Build Lustre MASTER on RHEL 6.4/CentOS 6.4 from Whamcloud git (use this archive if the link stopped working). It has been tested with Lustre 2.4 on CentOS 6.7.

Requirements

ASCAR is based on Lustre, so make sure you have installed the kernel and kernel-devel packages correctly and boot into the Lustre kernel. The simplest way is to install the official 2.4 RPMs, which can be found at https://downloads.hpdd.intel.com/public/lustre/lustre-2.4.0/el6.

The following instructions are for reference only. You can skip them if you already have Lustre up and running or if you prefer to use other methods to install Lustre.

Download Lustre server RPMs:

yum install -y w3m
# download the server RPMs
mkdir -p ~/lustre-rpm/server/RPMS; cd ~/lustre-rpm/server/RPMS
w3m https://downloads.hpdd.intel.com/public/lustre/lustre-2.4.0/el6/server/RPMS/x86_64/ -dump | grep rpm | awk '{print $3}' | xargs -n 1 -I{} wget https://downloads.hpdd.intel.com/public/lustre/lustre-2.4.0/el6/server/RPMS/x86_64/{}
# download the server SRPMs
mkdir -p ~/lustre-rpm/server/SRPMS; cd ~/lustre-rpm/server/SRPMS
w3m https://downloads.hpdd.intel.com/public/lustre/lustre-2.4.0/el6/server/SRPMS -dump | grep rpm | awk '{print $3}' | xargs -n 1 -I{} wget https://downloads.hpdd.intel.com/public/lustre/lustre-2.4.0/el6/server/SRPMS/{}

Install everything except for ZFS packages:

cd ~/lustre-rpm/server/RPMS
ls | grep -v zfs | xargs yum localinstall -y

Remove other non-Lustre kernels, reboot, then test it:

/usr/lib64/lustre/tests/llmount.sh

Instructions for Building Lustre

yum -y groupinstall "Development Tools"
yum -y install xmlto asciidoc elfutils-libelf-devel zlib-devel binutils-devel newt-devel python-devel hmaccalc perl-ExtUtils-Embed bison elfutils-devel audit-libs-devel

ASCAR only patches the client kernel modules so we can disable everything else to accelerate the building:

sh autogen.sh
./configure --disable-server --disable-snmp --disable-doc --disable-utils --disable-tests --disable-maintainer-mode --disable-liblustre
make -j9